Fundamental Physics and Observational Cosmology

Lead Research Organisation: University of Cambridge
Department Name: Applied Maths and Theoretical Physics

Abstract

We aim to advance the confrontation between observational cosmology and fundamental physics by developing testable signatures of early universe theories which are of direct relevance to STFC-supported satellite and other experiments, such as Planck and Clover. This work entails making detailed quantitative observational predictions which can be used to distinguish between different inflation models, as well as those involving cosmic superstrings and textures. In particular, we wish to study cosmologies emerging from higher dimensional models in fundamental theory, and discover ways in which to differentiate these from conventional four-dimensional models. We will also use data from the late universe to develop probes of the cosmological constant, dark energy and the variation of the fundamental constants of nature. In addition, we will embark on a new project in gravitational physics, studying the existence, formation and consequences of black holes. We will consider the distinctive signatures of extra dimensions which the experimental study of black holes may be able to uncover.

Publications

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Bouatta N (2010) Preheating in Dirac-Born-Infeld inflation in Journal of Cosmology and Astroparticle Physics

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Brax P (2007) Warping and F-term uplifting in Journal of High Energy Physics

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Brax P (2009) Collider constraints on interactions of dark energy with the Standard Model in Journal of High Energy Physics

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Brax P (2010) Higgs production as a probe of chameleon dark energy in Physical Review D

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Brax P (2010) Dilaton and modified gravity in Physical Review D

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Brax P (2008) D -term uplifted racetrack inflation in Journal of Cosmology and Astroparticle Physics

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Brax P (2010) Modifying gravity at low redshift in Journal of Cosmology and Astroparticle Physics

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Brax P (2008) f ( R ) gravity and chameleon theories in Physical Review D

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Brax P (2011) Anomalous coupling of scalars to gauge fields in Physics Letters B

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Brax P (2008) Racetrack inflation with matter fields and cosmic strings in Journal of Cosmology and Astroparticle Physics

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Brax P (2009) Decoupling dark energy from matter in Journal of Cosmology and Astroparticle Physics

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Brax, Philippe; Van De Bruck, Carsten; Davis, Anne-Christine & Shaw, Douglas (2009) Laboratory Tests of Chameleon Models

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Brown M (2009) Impact of modulation on CMB B -mode polarization experiments in Monthly Notices of the Royal Astronomical Society

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Burrage C (2007) P-term potentials from 4-D supergravity in Journal of High Energy Physics

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Burrage C (2007) P-term strings and semi-local strings in Journal of High Energy Physics

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Burrage C (2009) Active Galactic Nuclei Shed Light on Axionlike Particles in Physical Review Letters

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Burrage, Clare; Davis, Anne-Christine & Shaw, Douglas J. (2009) Searching for Axion-like Particles with Active Galactic Nuclei

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Cadonati L (2009) Status of NINJA: the Numerical INJection Analysis project in Classical and Quantum Gravity

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Cardoso V (2009) Bifurcation of plasma balls and black holes to Lobed configurations in Journal of High Energy Physics

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Cardoso V (2010) Phase diagram for non-axisymmetric plasma balls in Journal of High Energy Physics